1230205 has 16 divisors (see below), whose sum is σ = 1605744. Its totient is φ = 901120.

The previous prime is 1230199. The next prime is 1230223. The reversal of 1230205 is 5020321.

It can be written as a sum of positive squares in 8 ways, for example, as 76729 + 1153476 = 277^2 + 1074^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1230205 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3309 + ... + 3661.

It is an arithmetic number, because the mean of its divisors is an integer number (100359).

2^1230205 is an apocalyptic number.

It is an amenable number.

1230205 is a deficient number, since it is larger than the sum of its proper divisors (375539).

1230205 is a wasteful number, since it uses less digits than its factorization.

1230205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 1230205 is about 1109.1460679279. The cubic root of 1230205 is about 107.1500790899.

Adding to 1230205 its reverse (5020321), we get a palindrome (6250526).

The spelling of 1230205 in words is "one million, two hundred thirty thousand, two hundred five".